Locomotive-boiler fire-box.



LE GRAND PARISH.

LOCOMOTLVE BOILER FIRE BOX.

APPLICATION FILED act 1. 1913v 1 ,138,062. Patented May 4, 1915.

a swans-sun 1.

Li; URAND PARISH.

LOCOMOTWC BOILER FIRE BOX.

APPLICMION FILED ocr. 1, 1913.

l,138,062. ate11ted May 4, 1915,.

3 SHEETS SHEET 2- LE; GRAND PARISH.

LOCOMOTIVE BOILER FRE BOX.

APPLICATION FILED OCT. 1, 1913 Patented May 4, 1915.

3 SHEETS-SHEET 3- MKM LE QMND PAR SH. 0F IiEW Y9? AMERICAN AR. i'ZOMPAZlY. QIF

enrich.

3i, Y., ASSIGNOB, BY HESNE MSIGNMENTS, TO YORK, Y., A. CQRPQREZTZf-N OF IPELAXVARE.

LOCOEOTlVE-BOILEB FIREdXGX.

citizen of the 3. of New York city, (K State of New York, have new and useful lmprmements in Locorno five-Boiler Fire-Boxes, of which the fol? ing iS a specifier My invention 1". locomotives and. improvements in 1.. 1 A boilers.

The object of m; the elfioieney wit sumed in lo; in crease the pox: u 7 and unburned fuel particles from the box.

A further object of my inventii." provide firebox in. which a relsti. and substantially continuous sheet of an: shallhe injected in the firebox in the path of the rising firebox gases, and through which it shall be necessary for the gases of combustion to penetrate on their way to fines. i

A further object of my invention to provide means whereby a transverse sheet which the c lireboxes and of heated air shall be injected into the fire box in a substantially horizontal direction and in the path of the risinggeses whereby the partly burned gases shall be inter mingled and intermixed with the heated air, and the fuel shall be substantially perfectly consumed for gases from the firebox.

My invention consists in a locomotive boiler firebox provided with a transi-"erse vertically extending refractory well in the forwa'rdend thereof and spaced from the flue sheet, said well being provided. with sir conduits which rise from the lower end thereof and the upper part of the well being CIOSf-Wall for locomotive iirehoezes.

ictory .l extends across the firebox adjacent i0 tin: forward end thereof and provided with en of! Letters Eatsm.

Estented May 4, 3915.

Serial H0. 32.825.

"2 "djnoent to its upper 8.1! to the firebox W- and in u'hi Figure 1 Hal section of ii! iii:

is a central, veriioel, longitudiox, equipped with a cross-wall, and embo ying my invention; Fig. 2 is e Yell 'i fih transverse section of the firebox. or. the e '12? of Fig. 1; Fig. 3 hofzontsl section of the firebox on the line 3---3 of Fig. l; i and 5 are vertieal transverse sections showing modified forms or air inlet-s; F'g'. 6 is a horizontal section of the wall on the. line 6-6 of Fi 1; 7 is a view similar to Fig. 1, showing modified form of the Wall and air outlet.

in the art of burning fuels, it is Well known that once the fuel has been gasified it air inlet being will be caused to take place and with more or less It is new a general prac-' tice to admit air to the firebox from many points through the side Walls, the air being drawn into the firebox by reason of the strong artificial draft which is made useof,

but this method of supplying. ii' 'to the firebox does not. result in the most efiicient burning of the fuel for the reason that the air is not heated to appreciable extent "pet with the burning ce that the air re v L the b inning combustion the reason that the out-lets of the air passages have either been constructed to admit the air in large volumes or streams at separated points or have been constructed to admit the air in a continuous sheet but thrcazgli an opening which is unprotected against the entrance of slug. It is my particular o t to provide an inlet for the air whic will force the air to enter the firebox in a substantially horizontal and continuous thin sheet and which inlet shall be so formed that slag and similar substances cannot ol struct the end of the inlet and consequently the inlet remains indefinitely in the shape in which it is made.

A. further feature of my invention is that in providing the air inlet, I preferably ar range it as part of a transverse wall which placed in the forward part of the firebox spaced rearwurdly from the flue sheet and I thus admit the air in a sheet in the firebox in such a relation to the flue sheet that the added.- air will be thoroughly comniinglcd and mixed with the burning fuel before the firebox gases reach the line sheet and the separation of the wall from the flue sheet provides an auxiliary combustionchamber in which the burning gases can expand, as they flew to the lines and in expandin will be caused to deposit or drop their burdlin of rinders or unhurned solid fuel particles. 'lhese particles collect in the bottom of this auxiliary combustion chamber and are thus prevented from passing into the fines and heing forced. out-of the stack by the strong draft made use of in locomotives at the present time.

For the purpose of introducing the air in a preheated condition I arrange vertical air conduits in'conjunction with the wall, opening at the lower ends to the outer air, and through which air can rise to enter the firbox. At the upper part of the wall Iarrange a substantially continuous thin slot through which the air, which rises through the coniluitsflrnters the firebox in a substan- V tially horizontal sheet extending from side to side, and I further arrange this narrow slot below an overhanging ledge so that the slot protected n ainst any fuel particles or slag which might otherwise drop into the slot and obstruct. it. I arrange the opening of this slot through the rear face of the wall and. consequently the air which enters the firebox through the slot is projected rcar- Wardly in the firebox over the fuelhcd, and as all of the gases of combustion have to rise in the firebox and flow forwardly over the top of the wall, the air; which is thus projected rcurwardly into the 'firchox, forms an air b'uflle through which the rising firebox gas s must penetrate and hy mruus whereof the firclmx gases and the heated air are most thoroughly intcrusinglcd and niixcd. Fur thermore, as the connningling firebox gases their and air turn in t firebox to our the air and V in such a eon-l temperature in combustion the well, i complete the fines, causing the in the firebox heat tlilo whole interim 1 ings, coi'ii; )z'ise a flue she end, side sheets crown sheet ou .-"l is provided in he reu' and lines a," lraal l The firebox .pioi'idr usual construction I refractory Wall E in H firebox rising from of the grate and tin crown sheet. renr- Wardly from the no r auxiliary cumin tioii the wall and the flu bustion clnunher a 's ll and the rear end of the fireh'ire are combos 16% tion chamhers are mono a above the the wall in p tion bridge member 3 firebox at the 10E cured at i f the sides of the elmx l) ridge member serves 1 mi I preferably lmih n 1 ohm of horizontal rows I the bricks 33 I10 "lacing of such a hey can be readily placed in position n enough. so that they can lir pa: rd through 'h". fire-door a into thefirebox. The l member is provided with horizontal lifi dl'lllg plate 0" at its upper edge which wide coo-fights receive the wall an en ear edge a ledge or rib c which helps-to hold the wall in position upon bridge nunnher. For

the purpose of retaining wall in posi- 129 tion I provide hurl: stay places 6 which rise in contact with the forward {ii-cc of the i all and are secured ri iill y at. t'r -r lower ends to the bridge nit-umber is hurl: Stay plate serves to 1'( lfi E a f; and, as a further security, I nsuall holtthe upper row of the hrielts of the to the upper part of the h" s let in; means of holts r. is sisal l and, i, I provide the well 21 3 extending 339 1,188,062 fit :air conduits b and I providethe bridge member C with openings in the plate registering with the lower ends of these passages and through which air may enter said 5 passages. I complete the wall at its upper edge with a top row of bricks b which are wider than the thickness of the wall and.

which project from and over the rear face of the wall, forming an over-hanging ledge 19 or coping b, and I provide an inlet I) for the air which enters the firebox substantially at the junction of the over-hanging coping b and the rear face of the wall.

This inlet thus enters the firebox in such a manner that the air which is projected therethrough enters, ,thc firebox in substantially horizontal direction and is projected through the rising firebox gases. This inlet opening is protected against the entrance of slag 20 or other obstructions by the overhanging coping b".

As shown in 2 and 6, the inlet b comprises a series of narrow elongated slots 5 which are continuous from side to side in the firebox and which serve to inject the air in a substanti ally continuous ho ri zontal sheet,

For the purpose of provi rli ng this form of inlet I provide in the undersidcs of the bricks b ciu'ved passages if which connect at their so inner ends ,vvith the upper ends of saial air conduits b and the outer ends of whirl: are

ally and elongated horiujle' the narrow elongated compressed er}, soul-ally to proi slo 15 before dessliihec... The air. in rising Sii'th ugh the wall absorbs he? iron: the wall and consequently it in er .l into the lirehox in a relatively highly nested condition and thus best serves to increase the effective bliirniug of the fuel. 'lhe inlet openings al may be described as fan shai'vrd, in that they change from. the substantially compact area of the conduits 3 to the thin slot outlets i'f, and the a r is conse mcntly caused 6) enter the box in a substantially thin sheet, but which sheet is divided throughout its extent into a plurality of streams. It will, otaourse, he understood that these several streams tend to spread as they enter the firebox and that they thus serve to aid'in the cmnmingling 5) and int'erniixing the gases of combustion. The wall as mentioned before provides an auxiliary comlgiustion chamber in the forward end of the firebox in which -the firebox gases can complete their conilmstuin before they escape through the lines. Furthermore, lhi chamber being very much larger in 'LlUIlfll area than-the passage a)? above the wall, serves to permit the m ses of combuslion to expand and thus r ace their rate of flow to such an liZtlf lL i,nal ,zniy chains or other solid particles which they may he can ryiug are deposited in this auxiliary combos tion chamber. and for the purpose oi convew iontly Withdrawing; i v accumulation which may occur in the bolt-sin oi the chan'ilier, I

- result, however, is substantially the same as in the form shown in Fig. 6, that is, the air enters the firebox in substantially a continuone sheet from side to side but the various parts thereof are more finely Slll'itll't'ltlfid and consequently the cross currents induced. in the air issuing from this plurality small nozzles serves toetl'ect the thorough inter mingling and intermixing of the air with the firebox gases. In Fig. 5 I have shown still another form of outlet. Instead of the substantially square partitions, be, slimvn in Fig- -l, I have provided the underside of the bricks I) with corrugations 7) which provide a series of relatively small inlet openings these openings, together, forming What may be termct. a single continuous outlet from side to side adapted to inject the air into the firebox in the form of a subs-tr": tially continuous sheet, hut serving to disturb the individual parts of the sheet in such a manner that the mixing of the with the firebox is enhanced,

In Fig. 7 I have shown a form of wall which has some advantages over fo m shown in the other drawings In this form the airconcluit, instead of being provided in the wall itself, is provided in the bur-u stay plates, the bricks of which the wall is composed bein solid or hamper-ferrite. The buclr stay p ate ll, illustrated in Fig. 7, rises in contact with the forward. face of the W and is secured. at its lower end. to the l)! member (l. shown in Fig. "i" the ho tal passage (3 formed partly in tire upper brick 72 of the wall proper and. partly in ti topmost brioh or coping 7). This top row of bricks is substantially islcntical with t: a hric'ks illustrated in Figs. 1 to 53. {louse quently the inlet for the air lll.l.l-ll"l "l in Fig. 7 is substantially the same as e inlet illustrated in Fig 1. It to be 71- ed that in the form of the invention shown. .3 l. the inlet is v protected by means of the oven hanging ledge 72 in the same manner as in the form of the invention shown in Filo l l urthcrinru'e. as the bum: stays are ex.- posed to the high temperature of the {111505 m the auxiliary combustion chamber a", they sexto heat the air which rises through the passe. es cf before the air enters the fire box, iuul, on the other hand. as th rising. air extracts heat from the buck stays, it

warms to protcar 21: buck (stays against d8 six-notion by the lu {mnpemtures to which they are exposed As many mudifimlivns of my in'mntion win readil suggest iiaemselves ta 0110 skilled in the art do nut; Emit or confine my invem tion to the smcific Structures herein shown and describ,

Y Main w A lzxr-omotive b05121 firebfix and its grate,

in oombinatiou with a cross wall in the firebox at the forward end of the grate said wall being cmnposed of horizontal rows of suitably stayed refracmry bricks and extand 1? ing from side to side of the fir ng, a row of I i'i JlliliilliDUr', 131m: M; the jmwis.

gas uius'taniiafiy 2G of fire wall (numbing a. pluraiit animating] ubdwz m and coping in tcafiimzmy Wharmi 5 ha e imreunto set my hand this 19th day 06' 55a 1913 the prweuce of wa subsa .1 nng LE QB AND FARISFQ 

